study的过去式和现在分词形式

I studied English and Drama at college.

我在大学学的是英语和戏剧。

My brother studied at the Royal College of Art.

我哥哥曾就学于皇家美术学院。

The report found that 30% of the firms studied had failed within a year.

据报告称，受调查的.公司有30%一年内倒闭了。

He studied politics and economics at Yale.

他曾在耶鲁大学学习政治学和经济学。

I studied Italian so that I would be able to read Dante in the original.

我学习意大利语以便能读但丁的原著。